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(No Model.)

J. F. WARNER. BOOT 0R SHOE. No. 578,794. Patnted Mar. 16, 1897;

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UNITED STATES PATENT OEEICE.

JOHN F. WARNER, OF BOS'IJON, MASSACHUSETTS.

BooT 0R SHOE.

SPECIFICATION forming part of Letters Patent N o. 578,794, dated March16, 1897.

Application filed June 2, 1896.

To all whom t may concern,.-

Be it known that I, JOHN F. WARNER, of Boston, in the county of Sutfolkand State of Massachusetts, have invented a new and useful Improvementin Boots or Shoes, of which the following, taken in connection with theaccompanying drawings, is a specification.

My invention relates to the construction of the sole parts of boots andshoes with a view to make the same self-Ventilating and self-cooling;and it consists in providing an air-passage on each side of the shankand heel leading to a tube at the rear part of the heel. These passagesare between the inner and outer soles at the edge of the uppers. Thefront or ball of the shoe also has an air-passage in the shank and heel.The ball of the shoe between the inner and outer soles is filled with atubulated elastic fabric each tube of which is elastic and compressible,so that the wearer at each step converts each tube into an air or Vaporpump, causing a positive circulation of air between the soles and alsoeffecting, through orifices in the inner sole, thorough ventilation andcooling of the interior of the shoe.

The exact manner of carrying my invention into effect is illustrated inthe accompanying drawings, in which- Figure l is a view in plan, showingthe bottom of a shoe with the outer sole left oft', a part of theball-filling being represented as split to show the position of t-heair-tubes. Fig. 2

is a longitudinal section taken on line x x of' Fig. l. Fig. 3 isasection showing the construction of the elastic material that I use forthe ball-filling.

In the drawings Ihave shown only those parts of a boot or shoe to whichmy invention particularly relates-that is, the tread or sole part andthat part A of the upper that lies on the inner sole and is stitchedthereto.

The filling of the shank and heel may be of any desired material ormaterials; but it is essential that there shall be a free air-passage BB between said filling and the edges of the upper. At the heel end Ihave an airduct leading from the passages BB upward, terminating with anopening outside of the boot or shoe. The fore part or ball-lling RSerial No. 594,040. (No model.)

is peculiar, and consists of an elastic fabric, compound in its nature.It has two members, nam ely, a flat sheet, thin and very flexible, whichis united or made integral with a second member, which is a corrugatedsheet, so as to form with the first member tubes R R', each tube beingcomplete in itself and open at each end, so ask to be connected with theair-passages BB. The spaces S S,formed by the corrugations and thesurface of the inner soles, are not sufficiently distinct to act astubes, although they serve as air-ducts to connect the interior of theshoe (through the orifices V V) with the air-passages B B.

The tubes R R being each complete in itself act when compressed andexpanded as positive local-acting air-pumps. As the tubes R R arecompressed the air or vapor in them is forced out into the passages B B,thereby creating a current which will pass outward and force thestagnant air or vapor to pass through the passages B B and out throughthe tube C. As the pressure is removed the tubes R R', as well as thespaces S S, will enlarge, drawing in air and vapor from the interior ofthe shoe and some from the passages B B and B B', thus Ventilating andcooling the whole boot or shoe.

I am aware that corrugated pads or cushions have been used between theinner and outer soles, but I believe that no pads having complete tubeshave been used in this connection. l

I claim- In a boot or shoe, a filling, to be placed between the outerand inner soles, consisting of a tubulated elastic fabric each tube ofwhich is elastic and compressible and interiorly connected toair-passages whereby the boot or shoe is thoroughly ventilated,substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 19th da;r of May, A. D.1896.

JOHN F. WARNER.

IVitnesses:

FRANK G. PARKER, WILLIAM EAsoN.

